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经营范围
发明名称
LINE CHANGEOVER DEVICE
摘要
申请公布号
JPH0537673(A)
申请公布日期
1993.02.12
申请号
JP19910211393
申请日期
1991.07.30
申请人
NEC CORP
发明人
MITANI SHIGEYUKI
分类号
H04L1/22;H04L29/14;H04M11/00;H04Q5/00
主分类号
H04L1/22
代理机构
代理人
主权项
地址
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